United Airlines
flight
UA 5666:
Multiple routes
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FLIGHT SCHEDULE
Direct Flights:
United Airlines UA5666
Operates only on 2026-03-05
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Duration: 2:35, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5666
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Canadair CRJ 700 (CR7)
Canadair CRJ 700 (CR7)
Direct Flights:
United Airlines UA5666
Effective 2026-06-25 through 2026-09-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:51, non-stop
Canadair CRJ 550 (CR5)
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5666
Operates only on 2026-01-06
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Duration: 1:54, non-stop
Canadair CRJ 550 (CR5)
Canadair CRJ 550 (CR5)
Direct Flights:
United Airlines UA5666
Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Canadair CRJ 700 (CR7)
Canadair CRJ 700 (CR7)
Direct Flights:
United Airlines UA5666
Operates only on 2026-02-04
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Thu
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Sun
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Duration: 1:56, non-stop
Embraer EMB 175 (E7W)
Embraer EMB 175 (E7W)
Direct Flights:
United Airlines UA5666
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Canadair CRJ 700 (CR7)
Canadair CRJ 700 (CR7)
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This flight number is listed as serving the following routes:
- Idaho Falls (IDA) - Denver (DEN)
- Seattle-Tacoma (SEA) - San Francisco (SFO)